OpenDivine

A Go reimplementation of Divine Divinity (Larian Studios, 2002).

[!WARNING] OpenDivine is not fully playable yet. You can explore the world, but the full gameplay loop is still under development.

Renders the world and lets you walk around; combat, dialogue, items, and the rest of the gameplay loop are on the roadmap.

See STATUS.md for the feature checklist.

It reimplements the engine, not the content: you need a copy of the game to run OpenDivine off it.

Divine Divinity is still sold by Larian on Steam and GOG. If you don't have one already, you can buy it:

• https://www.gog.com/en/game/divine_divinity
• https://store.steampowered.com/app/214170/Divine_Divinity/

Why?

Divine Divinity is a great game and it deserves to be playable forever.

Running it

Requires Go 1.24 and a copy of Divine Divinity installed on disk.

You can either install from source with Go or download a prebuilt binary from the project's GitHub Releases.

# Install
go install grono.dev/opendivine@latest

# Run
opendivine

OpenDivine looks for the install at -gamedata <path>, then $OPENDIVINE_GAMEDATA, ./gamedata, and finally the standard Steam and GOG paths.

On failure it prints every path it tried.

Useful flags: -class {surm,surf,warm,warf,wizm,wizf}, -posx, -posy, -zoom, -region.

Showcase

Reverse engineering

The majority of the reverse engineering and assembly analysis was performed by Claude Opus 4.7 (Anthropic).

The copy of the game used was from Steam; div.exe SHA256 cd9f7a07c7a605c21052b3517346c7a63083063fb491276a3e4c9836c9b42a67.

Goals

• Gameplay parity good enough to play the whole game.

Non-goals

• Bug-for-bug parity where the engine bug is just a bug.
• Redistributing any of Larian's original assets.

License

GPL-3.0-only. Original game assets remain the property of Larian Studios.